By simple use of operational grammar (the rules I just stated) we test categorical, logical, empirical, existential, rational, reciprocal, fully accounted prose just a surely as we test any statement in other logics and mathematics.

In other words, just as all other forms of calculation falsify but do not justify, operational grammar falsified but does not justify.

The only difference is that operational grammar is complete in that it includes all actionable dimensions of reality, not some subset or general rule of reality.

If one cannot make such a statement in operational language he knows not of what he speaks. He just uses convention and habit like any other storyteller.